According to the Campaign for Better Transport, an average of nearly 8,000 parking bays have been granted for each of eight key development areas.

It says the spaces will increase car use instead of encouraging Londoners to visit so-called "opportunity areas" by public transport.

Some of the developments, such as the ones at White City and Stratford, are already under way. Others will take up to a decade to complete.

Transport for London has forecast congestion in the capital will increase by more than a third by 2025.

But according to the Campaign, previously known as Transport 2000, the rise in parking spaces will make the situation even worse.

Freely available car parking will also increase pressure to create more room on existing roads and build new ones.

The Olympics site causes particular concern as it will be "surrounded by vast new parking lots", says the report.

While car travel to the Games is officially being discouraged, related developments at Stratford and the Lower Lea Valley have planning permission for more than 11,000 parking places, says the group. Thousands more spaces have been built or approved at the Royal Docks, to the south.

Richard Bourn, of the campaign, said: "Parking on this scale is more like Los Angeles in the 20th century than London should be in the 21st.

"If we want to tackle congestion and climate change we will need to be much more serious about controlling parking.

"These developments are being planned as though people had never heard of global warming. We need much more car-free development where it's easy to walk and cycle and public transport is close."

The report says that car-dependent development will "predominate in most, if not all of the major development areas of outer London".

This includes the Thames Gateway areas of east London where the Government said it wanted low-carbon, sustainable communities to be built.

Sheila Rainger, of the RAC Foundation, said: "Well-designed parking is a service to the whole community."